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Stock Repurchase Program, Repurchased Shares (Details) - USD ($)
3 Months Ended 18 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Mar. 31, 2018
Mar. 31, 2019
Class of Stock [Line Items]        
Repurchased Amount $ 1,000,000.0   $ 2,718,000  
Common Stock        
Class of Stock [Line Items]        
Number of Shares (in shares)   75,813   75,813
Repurchased Amount   $ 1,008,652   $ 1,008,652
Average Price Per Share (in dollars per share)   $ 13.30   $ 13.30